ArrayAdapter使用方法

ArrayAdapter是一个简单的适配器，他的作用是将一个数组中的内容放入listView中。listView的item必须为textView。

MainActivity.java

 package com.kale.listview;

 import android.app.Activity;
 import android.os.Bundle;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;

 public class MainActivity extends Activity {

     ListView redLv;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         redLv = (ListView)findViewById(R.id.red_listView_id);

         String []arr01 = {"01","02","03","04","05","06"};
         //将数组送入arrayAdapter，这里的item对象必须是一个textView。
         //系统已经默认将数组中的信息放入textView了，所以无需指定额外的id
         ArrayAdapter<String> adapter01 = new ArrayAdapter<String>(this, R.layout.list_item,arr01);
         //设置adapter
         redLv.setAdapter(adapter01);
     }
 }

xml

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical" >

     <!-- 设置红色分割线的listView -->
     <ListView
         android:id="@+id/red_listView_id"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:divider="#f00"
         android:dividerHeight="2dp"
         android:layout_gravity="center"
         android:headerDividersEnabled="false"/>

 </LinearLayout>

listview_item.xml

<?xml version="1.0" encoding="utf-8"?>
 <TextView
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/item_textView_id"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:layout_gravity="center_horizontal"
     android:text="Large Text"
     android:gravity="center_horizontal"
     android:textAppearance="?android:attr/textAppearanceLarge" />